Display device and control method thereof

ABSTRACT

A display device comprises: a motor; a display; a plurality of speakers provided in a plurality of regions of the display; and at least one processor. The at least one processor being configured to output a plurality of audio signals corresponding to a plurality of audio channels to the plurality of speakers, control the motor to rotate the display, based on an input of a user command for rotating the display, and control the plurality of speakers to output the plurality of audio signals in response to a change in positions of the plurality of speakers based on a rotation of the display.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a continuation of U.S. application Ser. No.16/875,176 filed on May 15, 2020, which is based on and claims priorityunder 35 U.S.C. § 119 to Korean Patent Application No. 10-2020-0044146,filed on Apr. 10, 2020, in the Korean Intellectual Property Office, andKorean Patent Application No. 10-2020-0052786, filed on Apr. 29, 2020,in the Korean Intellectual Property Office, the disclosures of which areherein incorporated by reference in their entirety.

BACKGROUND Field

Apparatuses and methods consistent with the disclosure relate to adisplay device and a control method thereof, and more particularly, to arotatable display device and a control method thereof.

Description of the Related Art

Recently, image contents of various aspect ratios have been produced.Accordingly, various display devices have been developed to optimize theaspect ratio of image contents.

A typical display device is optimized to display image contents having alonger landscape ratio (e.g., ratios of landscape and portrait of 16:9,16:10, etc.), and as a result, the image content of the margins (e.g.,left and right margins, in the opposite case, top and bottom margins) isnot displayed on a screen of the display device when the image contentshave a longer portrait ratio.

A rotatable display device may provide an optimized viewing experiencefor the image contents having a longer landscape ratio as well as theimage contents having a longer portrait ratio by rotating a display tomatch the aspect ratio of the image contents. That is, the margingenerated according to the ratio of the image contents may be minimized.

Meanwhile, when a speaker is provided in the rotatable display device,the speaker may be rotated together with the display. In this case, thespeaker may output sound in an unwanted direction. In addition, when adirection in which the image contents are displayed on the display ischanged, if the setting (e.g., an audio channel, etc.) of the soundoutput from the speaker remains the same, a suitable sound field, stereoeffect, etc. may not be provided to the user.

As such, when the speaker is rotated together with the display, an audiosetting different from that of the typical speaker in a non-rotatingstate is required.

SUMMARY

According to an aspect of an example embodiment, there is provided adisplay device including a motor, a display, a plurality of speakersprovided in a plurality of regions of the display, and at least oneprocessor. The at least one processor may be configured to output aplurality of audio signals corresponding to a plurality of audiochannels to the plurality of speakers, control the motor to rotate thedisplay, based on an input of a user command for rotating the display,and control the plurality of speakers to output the plurality of audiosignals in response to a change in positions of the plurality ofspeakers based on a rotation of the display.

The plurality of speakers may be provided in the plurality of regionsthat are positioned in a plurality of different directions relative to arotating shaft of the display, and the processor may be furtherconfigured to identify an audio channel corresponding to a position ofeach of the plurality of speakers and output an audio signalcorresponding to the identified audio channel to each correspondingspeaker, identify an audio channel corresponding to a changed positionof each of the plurality of speakers based on the rotation of thedisplay, and output an audio signal corresponding to the identifiedaudio channel to each corresponding speaker.

The processor may be further configured to output a first audio signalcorresponding to a first audio channel of the plurality of audiochannels to a first speaker of the plurality of speakers, output asecond audio signal corresponding to a second audio channel of theplurality of audio channels to a second speaker of the plurality ofspeakers, and output the second audio signal to the first speaker of theplurality of speakers based on a 90° rotation of the display. After a90° rotation of the display the first speaker may be positioned in thesame direction relative to the rotating shaft as a direction in whichthe second speaker was positioned relative to the rotating shaft beforethe 90° rotation of the display.

The processor may be further configured to identify a rotation angle ofthe display while the display is rotated according to the user commandand identify a ratio at which the first and second audio signals are tobe mixed based on the identified rotation angle, and output an audiosignal mixed based on the identified ratio to the first speaker whilethe display is being rotated.

The processor may be further configured to control an image displayed onthe display to rotate in a direction opposite to a direction in whichthe display is rotated based on the identified rotation angle of thedisplay while the display is being rotated.

The processor may be further configured to output a synthesized audiosignal to the plurality of speakers while the display is being rotated,the synthesized audio signal may include the plurality of audio signalsthat have been synthesized.

The processor may be further configured to output a first audio signalcorresponding to a first audio channel of the plurality of audiochannels to a first speaker of the plurality of speakers and output asecond audio signal corresponding to a second audio channel of theplurality of audio channels to a second speaker of the plurality ofspeakers, and output the second audio signal through the first speakerof the plurality of speakers, based on the display being rotated by apredetermined critical angle smaller than 90°. After a 90° rotation ofthe display the first speaker may be positioned in the same directionrelative to the rotating shaft as a direction in which the secondspeaker was positioned relative to the rotating shaft before the 90°rotation of the display.

The processor may be further configured to control the display to rotateby 90° and control an image displayed on the display to rotate in adirection opposite to a direction in which the display is rotated, basedon an angle at which the display has been rotated surpassing thepredetermined critical angle.

The plurality of speakers may be provided in each of the plurality ofregions. The processor may be further configured to output a first audiosignal corresponding to a first audio channel of the plurality of audiochannels to a plurality of first speakers provided in a first region ofthe plurality of regions and output a second audio signal correspondingto a second audio channel of the plurality of audio channels to aplurality of second speakers provided in a second region of theplurality of regions, and output the second audio signal through theplurality of first speakers, based on a 90° rotation of the display.After a 90° rotation of the display the first region may be positionedthe same direction relative to the rotating shaft as a direction inwhich the second region was positioned relative to the rotating shaftbefore the 90° rotation of the display.

The processor may be configured to output the second audio signal to aspeaker of the plurality of first speakers that is adjacent to thesecond region and output the first audio signal to the remainingspeakers of the plurality of first speakers, while the display isrotated according to the user command.

According to another aspect of an example embodiment, a control methodof a display device may include outputting a plurality of audio signalscorresponding to a plurality of audio channels through a plurality ofspeakers; controlling a motor to rotate a display, based on an input ofa user command for rotating the display; and controlling the pluralityof speakers to output the plurality of audio signals based on a changein positions of the plurality of speakers based on the rotation of thedisplay.

The plurality of speakers may be provided in the plurality of regionsthat are positioned in a plurality of different directions relative to arotating shaft of the display. The outputting may include identifying anaudio channel corresponding to a position of each of the plurality ofspeakers and outputting an audio signal corresponding to the identifiedaudio channel through each corresponding speaker, and the controllingthe plurality of speakers may include identifying a changed audiochannel corresponding to a changed position of each of the plurality ofspeakers based on the rotation of the display, and outputting an audiosignal corresponding to the identified audio channel through eachcorresponding speaker.

The outputting may further include outputting a first audio signalcorresponding to a first audio channel of the plurality of audiochannels through a first speaker of the plurality of speakers andoutputting a second audio signal corresponding to a second audio channelof the plurality of audio channels through a second speaker of theplurality of speakers. The controlling the plurality of speakers mayfurther include controlling the first speaker to output the second audiosignal based on a 90° rotation of the display. After a 90° rotation ofthe display the first speaker may be positioned in the same directionrelative to the rotating shaft as a direction in which the secondspeaker was positioned relative to the rotating shaft before the 90°rotation of the display.

The controlling the plurality of speakers may further includeidentifying a ratio at which the first and second audio signals are tobe mixed based on a rotation angle at which the display is rotated andcontrolling the first speaker to output an audio signal mixed based onthe identified ratio through the first speaker while the display isbeing rotated.

An image displayed on the display may be controlled to rotate in adirection opposite to a direction in which the display is rotated basedon the identified rotation angle of the display while the display isbeing rotated.

The controlling the plurality of speakers may further include,controlling the plurality of speakers to output a synthesized audiosignal through the plurality of speakers while the display is beingrotated, the synthesized audio signal may include the plurality of audiosignals that have been synthesized.

The outputting may further include outputting a first audio signalcorresponding to a first audio channel of the plurality of audiochannels through a first speaker of the plurality of speakers andoutputting a second audio signal corresponding to a second audio channelof the plurality of audio channels through a second speaker of theplurality of speakers. The controlling the plurality of speakers mayfurther include outputting the second audio signal through the firstspeaker of the plurality of speakers, based on the display being rotatedby a predetermined critical angle smaller than 90°. After a 90° rotationof the display the first speaker may be positioned in the same directionrelative to the rotating shaft as a direction in which the secondspeaker was positioned relative to the rotating shaft before the 90°rotation of the display.

The display may be controlled to rotate by 90° and control an imagedisplayed on the display to rotate in a direction opposite to adirection in which the display is rotated, based on an angle at whichthe display has been rotated surpassing the predetermined criticalangle.

The plurality of speakers may be provided in each of the plurality ofregions. The outputting may further include outputting a first audiosignal corresponding to a first audio channel of the plurality of audiochannels through a plurality of first speakers provided in a firstregion of the plurality of regions and outputting a second audio signalcorresponding to a second audio channel of the plurality of audiochannels through a plurality of second speakers provided in a secondregion of the plurality of regions. The controlling the plurality ofspeakers may further include controlling the plurality of first speakersto output the second audio signal, based a 90° rotation of the display.After the 90° rotation of the display the first region may be positionedthe same direction relative to the rotating shaft as a direction inwhich the second region was positioned relative to the rotating shaftbefore the 90° rotation of the display.

The controlling the plurality of speakers may further includecontrolling a speaker of the plurality of first speakers that isadjacent to the second region to output the second audio signal andcontrolling the remaining speakers of the plurality of first speakers tooutput the first audio signal, while the display is rotated according tothe user command.

According to yet another aspect of an example embodiment, there isprovided a display device including a display, a first speaker providedin a first region of the display, a second speaker provided in a secondregion of the display, a third speaker provided in a third region of thedisplay, and at least one processor. The at least one processorconfigured to output a first audio signals corresponding to a firstaudio channel to the first speaker speakers; output a second audiosignals corresponding to a second audio channel to the second speaker;output a third audio signals corresponding to a third audio channel tothe third speaker; and based on a rotation of the screen, output thefirst audio signal corresponding to the first audio channel to one ofthe second or third speakers that has moved closer to a position of thefirst speaker before the rotation, output the second audio signalcorresponding to the second audio channel to one of the first or thirdspeakers that has moved closer to a position of the second speakerbefore the rotation, and output the third audio signal corresponding tothe third audio channel to one of the first or second speakers that hasmoved closer to a position of the third speaker before the rotation.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other aspects of the disclosure will be more apparentby describing certain embodiments of the disclosure with reference tothe accompanying drawings, in which:

FIG. 1 is a diagram showing a display system according to an embodiment;

FIG. 2 is a block diagram of the display device according to anembodiment;

FIG. 3 is a block diagram showing a relationship between audio channelsand speakers according to an embodiment;

FIG. 4 is a diagram showing a rotatable display in multiple orientationsaccording to an embodiment;

FIG. 5 is a diagram showing a rotatable display in multiple orientationsaccording to an embodiment;

FIG. 6A is a diagram showing positions of speakers in multiple displayorientation according to an embodiment;

FIG. 6B is a table showing audio signals output from the speakersaccording to the multiple display orientations shown in FIG. 6A;

FIG. 6C is a diagram showing an image displayed on the display inmultiple display orientations according to an embodiment of thedisclosure;

FIG. 7A is a diagram showing positions of speakers in multiple displayorientations according to an embodiment;

FIG. 7B is a table showing audio signals output from the speakersaccording to the multiple display orientations shown in FIG. 7A;

FIG. 7C is a diagram showing an image displayed on the display inmultiple display orientations according to an embodiment;

FIG. 8A is a diagram showing positions of speakers in multiple displayorientations according to an embodiment;

FIG. 8B is describing table showing audio signals output from thespeakers according to the multiple display orientations shown in FIG.8A;

FIG. 9 is a diagram showing a user interface (UI) displayed on thedisplay according to an embodiment;

FIG. 10 is a diagram showing an arrangement of the speakers in multipledisplay orientations according to an embodiment;

FIG. 11 is a diagram showing an arrangement of the speakers in multipledisplay orientations according to an embodiment;

FIG. 12A is a diagram showing an arrangement of the speakers in multipledisplay orientations according to an embodiment;

FIG. 12B is a table showing audio signals output from speakers accordingto the multiple display orientations shown in FIG. 12A;

FIG. 13 is a block diagram showing components of an electronic deviceaccording to an embodiment;

FIG. 14 is a block diagram showing components of a speaker according toan embodiment; and

FIG. 15 is a flowchart showing a control method of a display deviceaccording to an embodiment.

DETAILED DESCRIPTION

Since the disclosed embodiment may be modified and have severalembodiments, specific example embodiments of the disclosure will beillustrated in the drawings and described in detail below. However, thedisclosure is not limited to the specific example embodiments, butrather includes various modifications, equivalents, and/or alternativesof the example embodiments. Throughout the accompanying drawings,similar components will be denoted by similar reference numerals.

In describing the disclosure, when it is determined that a detaileddescription for well-known functions or configurations related to thedisclosure may unnecessarily obscure the gist of the disclosure, thedetailed description of the well-known functions or configurations maybe omitted.

In addition, the following embodiments may be modified in severaldifferent forms, and the scope of the disclosure is not limited to thefollowing embodiments. Rather, these embodiments make the disclosurethorough and complete, and are provided to completely transfer atechnical understanding of the disclosure to those skilled in the art.

Terms used in the disclosure are used only to describe specificembodiments rather than limiting the scope of the disclosure. Singularforms are intended to include plural forms unless the context clearlyindicates otherwise.

In the disclosure, the expressions “have”, “may have”, “include”, or“may include” indicate existence of a corresponding feature (forexample, a numerical value, a function, an operation, or a componentsuch as a part), and do not exclude existence of an additional feature.

Expressions “first”, “second”, and the like, used in the disclosure mayindicate various components regardless of a sequence and/or importanceof the components, will be used only in order to distinguish onecomponent from the other components, and do not limit the correspondingcomponents.

In the disclosure, an expression “A or B”, “at least one of A and/or B”,“one or more of A and/or B”, or the like, may include all possiblecombinations of items listed together. For example, “A or B”, “at leastone of A and B”, or “at least one of A or B” may indicate all of 1) acase in which at least one A is included, 2) a case in which at leastone B is included, or 3) a case in which both of at least one A and atleast one B are included.

In the disclosure, the singular expression includes the pluralexpression unless the context clearly indicates otherwise. It should befurther understood that the term “include” or “constituted” used in theapplication specify the presence of features, numerals, steps,operations, components, parts mentioned in the specification, orcombinations thereof, but do not preclude the presence or addition ofone or more other features, numerals, steps, operations, components,parts, or combinations thereof.

When it is mentioned that any component (for example, a first component)is (operatively or communicatively) coupled with/to or is connected toanother component (for example, a second component), it is to beunderstood that any component is directly coupled with/to anothercomponent or may be coupled with/to another component through the othercomponent (for example, a third component). On the other hand, when itis mentioned that any component (for example, a first component) is“directly coupled with/to” or “directly connected to” to anothercomponent (for example, a second component), it is to be understood thatthe other component (for example, a third component) is not presentbetween any component and another component.

FIG. 1 is a diagram showing a display system according to an embodiment.

Referring to FIG. 1, a system 10 may include a display device 100 andexternal devices 200-1 and 200-2 communicating with the display device100.

The display device 100 may be implemented as various display devicessuch as a TV, a smart TV, a monitor, a signage, an electronic pictureframe, an electronic blackboard, an electronic table, a laptop computer,an integrated display computer, a personal digital assistant (PDA), aportable multimedia player (PMP), a large format display (LFD), a cinemadisplay, an electric sign, a tablet computer, a smartphone, aninstrument panel of a vehicle, and a dashboard. However, the displaydevice 100 is not limited to the above-described examples and may beimplemented as various electronic devices having a display.

The display device 100 may include a display 120 and a plurality ofspeakers (130-1, 130-2, 130-3 and 130-4) (see FIG. 2).

When a user command for rotating the display 120 is input, the displaydevice 100 may rotate the display 120. The user command may be inputthrough an input device 150 (see FIG. 13) (e.g., a button, a touchpanel, a microphone, etc.) provided in the display device 100, or may beinput through the external devices 200-1 and 200-2 that performcommunication (e.g., communication using infrared, NFC, Bluetooth,Wi-Fi, a server, etc.) with the display device 100. For example, asillustrated in FIG. 1, a first external device 200-1 may be implementedas a remote controller, and a second external device 200-2 may beimplemented as a smartphone. However, this is only an example, and theexternal devices 200-1 and 200-2 may be implemented as various externaldevices such as a keyboard, a mouse, and a pen.

At this time, the user command (or event) may include various types ofcommands such as a command in which the user presses a specific buttonof the display device 100 (or the external devices 200-1 and 200-2), acommand in which the user selects a menu displayed on the display 120(or the external devices 200-1 and 200-2) through a button or a touchpanel of the display device 100 (or the external devices 200-1 and200-2), a command (gesture command) in which the user rotates theexternal devices 200-1 and 200-2, and a command (voice command) in whichthe user speaks a specific word.

In addition, the user command may include a command to control an imagedisplayed on the external devices 200-1 and 200-2 to be displayed on thedisplay 120. For example, when a screen is interlocked (shared) betweenthe display device 100 and the external devices 200-1 and 200-2 throughcommunication (mirroring, etc.), the display device 100 may receiveimages displayed on the external devices 200-1 and 200-2 from theexternal devices 200-1 and 200-2 and display the received images on thedisplay 120. When a direction (e.g., a portrait (vertical) or landscape(horizontal) direction) of the images displayed on the external devices200-1 and 200-2 is different from a direction (e.g., a portrait(vertical) or landscape (horizontal) direction) in which the display 120is disposed, the display device 100 may rotate the display 120 in adirection that matches the direction of the images displayed on theexternal devices 200-1 and 200-2. In some embodiments, the image in theportrait (vertical) direction may represent an image in which a portrait(vertical) length is longer than a landscape (horizontal) length, andthe image in the landscape (horizontal) direction may represent an imagein which a portrait (vertical) length is shorter than a landscape(horizontal) length.

The display 120 may be rotated in a clockwise or counterclockwisedirection in a state in which the screen on which the image is displayedis disposed toward a front axis (z axis). Here, the clockwise directionmay refer to a direction of rotation from a vertical direction axis (yaxis) to a horizontal direction axis (x axis), and the counterclockwisedirection may refer to a direction rotated from the horizontal directionaxis (x axis) to the vertical direction axis (y axis). That is, theclockwise direction and the counterclockwise direction may refer to arelationship of the directions opposite to each other.

In some non-limiting embodiments, the display 120 may be rotated to bedisposed in one of the landscape direction and the portrait direction.The landscape direction (or landscape) may refer to an arrangement stateof the display 120 in which a long axis of the display 120 aligns withthe horizontal direction axis (x axis) and a short axis of the display120 aligns with the vertical direction axis (y axis) as illustrated inFIG. 1 (or (2) of FIG. 4). Alternatively, the portrait direction(portrait) may refer to an arrangement state of the display 120 in whichthe long axis of the display 120 is aligned with the vertical directionaxis (y axis) and the short axis of the display 120 is aligned with thehorizontal direction axis (x axis) as illustrated in (1) of FIG. 4. Thatis, the arrangement in the landscape direction may indicate that thedisplay 120 is disposed in a state in which the horizontal directionlength of the display 120 is longer than the vertical direction lengthof the display 120, and the arrangement in the portrait direction mayindicate that the display 120 is disposed in a state in which thehorizontal direction length of the display 120 is shorter than thevertical direction length of the display 120.

The plurality of speakers 130 may be provided in a plurality of regionsof the display device 100. For example, the plurality of speakers 130may be provided in a plurality of side regions of the display 120.Referring to FIG. 1, the plurality of speakers 130 may include a firstspeaker 130-1 to a fourth speaker 130-4. In some non-limitingembodiments, the first speaker 130-1 may be positioned in a left regionof the display 120 (or a left rear region of the display 120), thesecond speaker 130-2 may be positioned in an upper region of the display120 (or an upper rear region of the display 120), the third speaker130-3 may be positioned in a right region of the display 120 (or a rightrear region of the display 120), and the fourth speaker 130-4 may bepositioned in a lower region of the display 120 (or a lower rear regionof the display 120). However, FIG. 1 shows a non-limiting exampleembodiment, and the number of speakers included in the plurality ofspeakers 130, the arrangement of each speaker, and a size of eachspeaker may be provided in various configurations.

The plurality of speakers 130 may be rotated together with the display120 when the display 120 is rotated. That is, the plurality of speakers130 may move to different positions and be directed in differentdirections when the display 120 is rotated. For example, each of theplurality of speakers 130 may be directed in a specific direction basedon rotation of a rotating shaft 10 (see FIG. 4) of the display 120. Thespecific direction may be one of a left direction, a right direction, anupper direction, and a lower direction, but is not limited thereto, andmay be one of various directions.

The plurality of speakers 130 may output a plurality of audio signalsbased on their positions when the display 120 is rotated. For example,when the display 120 is rotated 90 degrees in a clockwise direction, thefirst speaker 130-1 may move to a position corresponding to the secondspeaker 130-2 before rotation according to the rotation. When theposition of the first speaker 130-1 is changed according to the rotationof 90 degrees in the clockwise direction, the first speaker 130-1 may becontrolled to output an audio signal output from the second speaker130-2 before rotation. Similarly, the second speaker 130-2 may becontrolled to output an audio signal output from the third speaker 130-3before rotation based on the position of the second speaker 130-2changed according to the rotation of 90 degrees in the clockwisedirection. The third speaker 130-3 and the fourth speaker 130-4 maysimilarly be controlled to output the audio of the speaker previouslyresiding it their present position after a rotation of the display 120.

According to the non-limiting embodiment described above, a displaydevice in which the audio signal is output according to the rotation(rotation direction, angle, etc.) of the display 120 is provided, aswell as a control method thereof. In addition, because audio outputs ofthe plurality of speakers 130 are automatically changed when the display120 is rotated, it is possible to provide a sound effect and a soundfield such as stereo and surround.

FIG. 2 is a block diagram of the display device according to anembodiment.

Referring to FIG. 2, an embodiment of the display device 100 may includea motor 110, a display 120, a plurality of speakers 130-1 through 130-n,and a processor 140.

The motor 110 may rotate the display 120. In some non-limitingembodiments, the motor 110 may be coupled to the display 120 and maytransmit a rotational force in a clockwise or counterclockwise directionto rotate the display 120 in a desired direction. In other non-limitingembodiments, the motor 110 may be connected to a gear (e.g., a circulargear) coupled with the display 120.

In some non-limiting embodiments, the motor 110 may refer to an electricmotor that receives electrical energy (or power) and converts thereceived electrical energy into kinetic energy (or rotational force). Tothis end, the motor 110 may be implemented as various motors such as analternating current (AC) motor using AC as a driving power source, and adirect current (DC) motor using DC as the driving power source. The ACmotor may generally refer to a motor constructed by using an armature asa stator and using a field magnet as a rotor, and the DC motor maygenerally refer to a motor constructed by using the field magnet as thestator and the armature as the rotor. The stator may refer to a fixedportion, and the rotor may refer to a portion connected to a power load(i.e., the display 120 or the gear connected to the display 120) tosupply the rotational force. The field magnet may refer to a portion ofa winding that generates a magnetic flux, and the armature may refer toa portion of the winding where a voltage (electromotive force) isinduced while breaking the magnetic flux.

The display 120 may display various images such as broadcast content andmultimedia content. In some non-limiting embodiments, the image may beat least one of a still image or a video, and may be received from theoutside of the display device 100 or may be stored in the display device100. In addition, the display 120 may display various user interfaces(UIs), icons, figures, characters, and the like.

The display 120 may be implemented as various types of displays such asa liquid crystal display (LCD) that controls the degree (brightness oflight or intensity of light) to which light emitted from a backlightunit is transmitted through a liquid crystal by using a separatebacklight unit (e.g., light emitting diode (LED), etc.) as a lightsource and controlling a molecular arrangement of the liquid crystal, ora display that uses a self-luminescent element (e.g., a mini LED with asize of 100 to 200 μm, a micro LED with a size of 100 μm or less, anorganic LED (OLED), a quantum dot LED (QLED), etc.) as a light sourcewithout a separate backlight unit or a liquid crystal.

In addition, the display 120 may include a plurality of driving circuitscorresponding to a plurality of pixels. The driving circuit may beimplemented in a form such as amorphous silicon (a-Si), a thin filmtransistor (TFT), a low temperature poly silicon (LTPS) TFT, or anorganic TFT (OTFT). In addition, the pixel may be a minimum unitconstituting an image, and each pixel may appear as a point having aspecific color and brightness according to a voltage (or current)applied from a corresponding driving circuit.

In some non-limiting embodiments, the display 120 may be a flexibledisplay having a characteristic in which a certain portion is bent,folded, or unfolded again, or the display 120 may be a transparentdisplay having a characteristic of making an object visible bytransmitting the object located behind the display 120.

In some non-limiting embodiments, the display 120 may be a touch screen(or touch panel) in combination with a touch detector (or touch sensor)that identifies a touch position of a user. The touch detector may beimplemented in various ways such as a resistive type that identifies thetouch position of the user by detecting physical pressure on a surfaceof the display 120, a capacitive type that identifies the touch positionof the user by a change in an electrical signal on the surface of thedisplay 120, and an electromagnetic wave way that identifies the touchposition by detecting that electromagnetic waves (e.g., infrared rays,ultrasonic waves, etc.) emitted in the form of a grid on the surface ofthe display 120 are blocked by obstacles (e.g., a user's finger, pen,etc.).

The display 120 may be rotated according to the driving of the motor110. Specifically, the display 120 may be rotated in a clockwise orcounterclockwise direction around the rotating shaft 10 (see FIGS. 4 and5) according to the driving of the motor 110. In some non-limitingembodiments, the rotating shaft 10 may be positioned at a geometriccenter of the display 120, but is not limited thereto and may bepositioned at another position of the display 120.

The plurality of speakers 130 may be provided in a plurality of regionsof the display 120.

The plurality of speakers 130 may include a first speaker 130-1 to ann-th speaker 130-n. In some non-limiting embodiments, n may be a naturalnumber of 2 or more. The same description may be applied to each of theplurality of speakers 130, unless otherwise specified, and accordingly,hereinafter, the overlapping contents will be omitted and the n-thspeaker 130-n will be described on behalf of other speakers forconvenience of description.

The n-th speaker 130-n may output an audio signal. Here, the audiosignal may refer to a signal represented by converting a voice (orsound) into an electrical waveform signal. Outputting the audio signalmay include converting the electrical waveform signal into a sound waveor acoustic wave. For example, the n-th speaker 130-n may generate thesound wave by moving a diaphragm back and forth under the control of theprocessor 140 based on the audio signal. The sound wave may have aspecific frequency and amplitude. For example, a high frequency(reciprocal of a period) of the sound wave may indicate that a pitch (orheight) of the sound is a high pitch, and a large amplitude of the soundwave may indicate that a loudness of sound (level or sound volume) ishigh.

The processor 140 may control an overall operation of the display device100. For example, the processor 140 may be a general-purpose processorsuch as a central processing unit (CPU), an application processor (AP)or the like, a graphic dedicated processor such as a graphic processingunit (GPU), a vision processing unit (VPU), or the like, and anartificial intelligence dedicated processor such as a neural processingunit (NPU). In addition, the processor 140 may include a volatile memoryfor loading at least one instruction or module.

The processor 140 may control the plurality of speakers 130 to output aplurality of audio signals corresponding to a plurality of audiochannels. For example, when a user command for rotating the display 120is input, the processor 140 may control the motor 110 to rotate thedisplay 120. To compensate for a change in the positions of the speakers130 based on the rotations of the display 120, the processor 140 maycontrol the plurality of speakers 130 to output the plurality of audiosignals based on the positions of the plurality of speakers 130 changedby the rotation of the display 120. This will be described in detailwith reference to FIGS. 3 to 5.

FIG. 3 is a diagram showing a relationship between audio channels andspeakers according to an embodiment.

Referring to FIG. 3, the processor 140 may control the plurality ofspeakers 130 to output a plurality of audio signals corresponding to aplurality of audio channels. Each audio channel may be output throughone speaker (one of 130-1 through 130-n), and the processor 140 maycontrol the plurality of speakers 130 to simultaneously output theplurality of audio signals corresponding to the plurality of audiochannels.

In some non-limiting embodiments, the processor 140 may control a firstspeaker 130-1 to output an audio signal of a first audio channel,control a second speaker 130-2 to simultaneously output an audio signalof a second audio channel, . . . , and control an n-th speaker 130-n tosimultaneously output an audio signal of an n-th audio channel.

In some non-limiting embodiments, each audio channel may include anaudio signal classified according to a frequency band (low/middle/highfrequency band) or spatial sound (left/right/center, etc.). The audiosignal included in each audio channel may be different from the audiosignals included in other audio channels.

For example, when the plurality of audio channels provide stereo audio.Accordingly, the plurality of audio channels may include a left audiochannel and a right audio channel. The left audio channel may include anaudio signal representing a sound of a left space based on the user'sposition (or display 120), and the audio signal of the left audiochannel may be output through the first speaker 130-1 positioned on theleft side based on the display 120. In addition, the right audio channelmay include an audio signal representing a sound of a right space basedon the user's position (or display 120), and the audio signal of theright audio channel may be output through the second speaker 130-2positioned on the right side based on the display 120.

As another example, when the plurality of audio channels include fouraudio channels, the plurality of audio channels may include a front leftaudio channel (hereinafter, referred to as an L audio channel), a frontcenter audio channel (hereinafter, referred to as a C audio channel), afront right audio channel (hereinafter, referred to as a R audiochannel), and a bottom (or rear surround) audio channel (hereinafter,referred to as a B audio channel). In the same manner as described inthe above example, the L audio channel may include an audio signalrepresenting a sound of a left space (or a front left space) based onthe user's position (or display 120), the C audio channel may include anaudio signal representing a sound of a middle space (or human'sdialogue, etc.), the R audio channel may include an audio signalrepresenting a sound of a right space (or a front right space) based onthe user's position (or display 120), and the B audio channel mayinclude an audio signal representing a sound of a rear space (orbackground sound, effect sound, etc.). Each channel may be output by arespective speaker 130 based on the position of the speaker at the timethe audio is output.

As described above, because the display device 100 may output aplurality of audio channels through the plurality of speakers 130, it ispossible to provide the user with a more stereoscopic human'sdialogue/voice, background sound/effect sound, and the like, resultingin the user experiencing a three-dimensional sound field effect and asense of space.

According to the number, arrangement, etc. of the plurality of speakers130, the plurality of audio channels may be provided in various formssuch as stereo and multi-channels (e.g., 2.1 audio channel, 4 audiochannel, 5.1 audio channel, 7.1 audio channel, etc.), but in thefollowing embodiments, for convenience of description, the plurality ofaudio channels are presented as multi-channels having four audiochannels, unless otherwise specified.

FIGS. 4 and 5 are diagrams for describing a rotatable display accordingto an embodiment.

Referring to FIGS. 4 and 5, when a user command for rotating the display120 is input, the processor 140 may control the motor 110 to rotate thedisplay 120.

The processor 140 may control the motor 110 to rotate the display 120 ata specific rotation angle. For example, the processor 140 may controlthe motor 110 to rotate the display 120 at the specific rotation angleby applying a pulse signal in which a width (length/ratio of time duringwhich a high signal (voltage, etc.) is applied for an entire period) isadjusted to the motor through a pulse width modulation (PWM) method. Forexample, the width of the pulse signal may be determined based on aweight of the display 120, a torque of the motor 110, a gear ratio, andthe like. In addition, the rotation angle may be +90 degrees (clockwisedirection) or −90 degrees (counterclockwise direction). For example,when the processor 140 transmits a pulse signal for rotating the display120 at an angle of +90 degrees to the motor 110, the display 120 may begradually rotated in the clockwise direction from 0 to 90 degreesaccording to the driving of the motor 110 based on the pulse signal. Theabove description is directed at an example embodiment, and it ispossible for the processor 140 to control the motor 110 according toother methods known in the art.

In some non-limiting embodiments, the display device 100 may furtherinclude a rotating shaft 10 and supports 20 or 30.

The rotating shaft 10 may rotate the display 120 by transmitting therotational force provided by the motor 110 to the display 120.Accordingly, the rotating shaft 10 may be coupled to the motor 110 andthe supports 20 or 30. In some non-limiting embodiments, a separatebearing may be positioned outside the rotating shaft 10. The bearing mayprovide for smooth rotation of the rotating shaft 10 by fixing therotating shaft 10 at a predetermined position and reducing a frictionalforce associated with rotating the rotating shaft 10 while supporting aload applied to the rotating shaft 10. In some non-limiting embodiments,the rotating shaft 10 may be a rotating shaft of the motor 110 or arotating shaft separate from the rotating shaft of the motor 110.

The supports 20 and 30 may support the display device 100. In somenon-limiting embodiments, the supports 20 and 30 may include brackets ofa video electronics standards association (VESA) standard (e.g.,landscape and portrait of 100×100 mm, 200×100 mm, 400×400 mm, etc.) orbrackets for the display device 100 only. For example, as shown in FIG.4, the support 20 may be a wall-hanging support for fixing the displaydevice 100 to a wall, or as shown in FIG. 5, the support 30 may be astand for erecting the display device 100 on a floor (or ground).Further, the supports 20 and 30 may be an arm attached (or fastened) toa desk or the like, and may be detached (removed) from the desk. In somenon-limiting embodiments, the supports 20 and 30 may include the motor110 therein.

Since the display device 100 may rotate the display 120 through thedriving of the motor 110 rather than an external force of the user, theuser convenience may be improved. In particular, when the display device100 has a large display, the user may more conveniently rotate thedisplay 120 through a user command (gesture, user voice, etc.) when thedisplay device 100 is positioned at a position out of the reach of theuser. In addition, because the user's hand does not touch the displaydevice 100, it is possible to prevent a user's fingerprint,contaminants, and the like from contacting the display device 100 due tothe user.

When the display 120 is rotated by the motor 110, the plurality ofspeakers 130 may also be rotated with the display 120. For example, thedisplay 120 may be rotated 90 degrees by the motor 110. As such, thepositions of the plurality of speakers 130 may be changed as theplurality of speakers 130 are rotated with the display 120.

The processor 140 may control the plurality of speakers 130 to outputthe plurality of audio signals based on the change in the positions ofthe plurality of speakers 130 after the rotation of the display 120.That is, when the positions of the plurality of speakers 130 are changedbased on the display 120 being rotated, the processor 140 may change theaudio channel output according to the position of each of the pluralityof speakers 130.

The plurality of speakers 130 may be provided in a plurality of regionsand directed in a plurality of different directions in relation to therotating shaft 10 of the display 120. For example, the plurality ofregions may include a first region positioned in an upper direction, asecond region positioned in a right direction, a third region positionedin a lower direction, and a fourth region positioned in a leftdirection, in relation to the rotating shaft 10 of the display 120.

The plurality of regions may be moved to different positions havingdifferent directions based on a rotation direction of the display 120.For example, when the display 120 is rotated in the clockwise direction,the plurality of speakers 130 (or the plurality of regions) may besequentially moved to positions corresponding to the upper direction,the right direction, the lower direction, and the left direction inrelation to the rotating shaft 10. Alternatively, when the display 120is rotated in the counterclockwise direction, the plurality of speakers130 (or the plurality of regions) may be sequentially moved to positionscorresponding to the upper direction, the left direction, the lowerdirection, and the right direction in relation to the rotating shaft 10.

In some non-limiting embodiments, the processor 140 may identify anaudio channel corresponding to the position of each of the plurality ofspeakers 130. Based on this information, the processor 140 may controleach speaker 130 to output an audio signal corresponding to theidentified audio channel.

For example, the plurality of audio channels may include a C audiochannel, an L audio channel, an R audio channel, and a B audio channel.In a state in which the display 120 is disposed in a portrait directionas illustrated in (1) of FIGS. 4 and 5, the processor 140 may identifyan audio channel corresponding to a positional relationship of the firstspeaker 130-1 among the plurality of audio channels.

For example, the processor 140 may identify the C audio channelrepresenting a sound in the upper direction corresponding to the upperdirection in which the first speaker 130-1 is positioned relative to therotating shaft 10 of the display 120, as an audio channel to be outputfrom the first speaker 130-1. In this case, the processor 140 maycontrol the first speaker 130-1 to output an audio signal included inthe identified C audio channel through the corresponding first speaker130-1.

In this way, the processor 140 may control the second to fourth speakers130-2 to 130-4 so that the second speaker 130-2 positioned in the rightdirection outputs an audio signal of the R audio channel representing asound in the right direction, the third speaker 130-3 positioned in thelower direction outputs an audio signal of the B audio channelrepresenting a sound in the lower direction, and the fourth speaker130-4 positioned in the left direction outputs an audio signal of the Laudio channel representing a sound in the left direction, by identifyingthe audio channel corresponding to the positional relationship of eachof the plurality of speakers 130.

When the position of each of the plurality of speakers 130 is changedaccording to the rotation of the display 120, the processor 140 mayidentify an audio channel corresponding to the changed position. In thiscase, the processor 140 may control each speaker to output an audiosignal corresponding to the identified audio channel based on therespective positions on the plurality of speakers 130.

For example, the processor 140 may control the first speaker 130-1 tooutput a first audio signal corresponding to the first audio channel,and may control the second speaker 130-2 to output a second audio signalcorresponding to the second audio channel.

When the display 120 is rotated by 90°, the processor 140 may controlthe first speaker 130-1 to output the second audio signal. At this time,when the display 120 has been rotated by 90°, the first speaker 130-1may be positioned in the same position that the second speaker 130-2 waspositioned in relation to the rotating shaft 10 before the display 120was rotated.

For example, when the display 120 is rotated by 90° in the clockwisedirection from the arrangement state (i.e., an arrangement state in theportrait direction) of the display 120 shown in (1) of FIGS. 4 and 5,the display 120 and the plurality of speakers 130 may be changed to anarrangement state (i.e., an arrangement state in the landscapedirection) shown in (2) of FIGS. 4 and 5.

As shown in (2) of FIGS. 4 and 5, based on a 90 degrees rotation of therotating shaft 10, the first speaker 120-1 may be positioned in a firstregion existing in the right direction, the second speaker 130-2 may bepositioned in a second region existing in the lower direction, the thirdspeaker 130-3 may be positioned in a third region existing in the leftdirection, and the fourth speaker 130-4 may be positioned in a fourthregion existing in the upper direction. In this case, when the positionsof the plurality of speakers 130 are changed based on rotation of thedisplay 120, the processor 140 may identify the R audio channelrepresenting a sound in the right direction corresponding to the rightdirection in which the first speaker 130-1 is positioned, and maycontrol the first speaker 130-1 to output an audio signal of theidentified R audio channel.

Similarly, the processor 140 may control the second to fourth speakers130-2 to 130-4 so that the second speaker 130-2 positioned in the lowerdirection outputs an audio signal of the B audio channel representing asound in the lower direction, the third speaker 130-3 positioned in theleft direction outputs an audio signal of the L audio channelrepresenting a sound in the left direction, and the fourth speaker 130-4positioned in the upper direction outputs an audio signal of the C audiochannel representing a sound in the upper direction, by identifying theaudio channel corresponding to the changed position of each speaker.

Thereafter, when the display 120 is rotated by 90 degrees in theclockwise direction, the arrangement state may be changed thearrangement state shown in (3) of FIGS. 4 and 5, and in the same way asdescribed above, the processor 140 may control the plurality of speakers130 to output the plurality of audio signals based on the positions ofthe plurality of speakers 130 changed according to the rotation of thedisplay 120.

In the above description, it is assumed that the number of the pluralityof speakers 130 and the number of the plurality of audio channels arethe same. However, the number of the plurality of speakers 130 and thenumber of the plurality of audio channels may be different.

For example, when the number of the plurality of speakers 130 is fourand the number of the plurality of audio channels is two, the processor140 may control four speakers so that two of the four speakers outputtwo audio channels (e.g., L audio channel and R audio channel). That is,some of the plurality of speakers may output the plurality of audiochannels (e.g., L audio channel and R audio channel).

Referring to (1) of FIG. 4, when the display 120 is arranged in theportrait direction, the processor 140 may control the fourth speaker130-4 positioned in the left direction to output the audio signalcorresponding to the L audio channel and the second speaker 130-2positioned in the right direction to output the audio signalcorresponding to the R audio channel. Similarly, the processor 140 maycontrol the first speaker 130-1 positioned in the upper direction andthe third speaker 130-3 positioned in the lower direction not to outputthe audio channel.

When the display 120 is rotated by 90 degrees in the clockwise directionand the display 120 is arranged in the landscape direction, as shown in(2) of FIG. 4, the processor 140 may control the third speaker 130-3positioned in the left direction to output the audio signalcorresponding to the L audio channel and the first speaker 130-1positioned in the right direction to output the audio signalcorresponding to the R audio channel, based on the position of eachspeaker changed according to the rotation of the display 120. Similarly,the processor 140 may control the fourth speaker 130-4 positioned in theupper direction and the second speaker 130-2 positioned in the lowerdirection not to output the audio channel.

As another example, when the number of the plurality of speakers 130 isfour and the number of the plurality of audio channels is two, theprocessor 140 may control four speakers to output one audio channel pertwo speakers. That is, all of the plurality of speakers 130 may becontrolled to output audio signals. In this case, two of the fourspeakers may output a first audio channel and the other two speakers mayoutput a second, different audio channels (e.g., L audio channel, Raudio channel, etc.).

When the display 120 is rotated, the processor 140 may change the audiochannel output from each of the four speakers according to the positionof each speaker based on to the rotation of the display 120.

Hereinafter, a method of adjusting an audio channel output from each ofthe plurality of speakers 130 while the display 120 is rotated will bedescribed with reference to FIGS. 6A to 8B.

FIG. 6A is a diagram showing changes in the positions of the speakers asthe display is rotated according to an embodiment. FIG. 6B is a tableshowing audio signals output from the speakers as the display of FIG. 6Ais rotated. FIG. 6C is a diagram showing an image displayed on thedisplay as the display is rotated according to an embodiment.

(1) of FIGS. 6A to 6C represents a state in which the display 120 isdisposed in the portrait direction, (2) of FIGS. 6A to 6C represents astate in which the display 120 is rotated by 30 degrees in the clockwisedirection from the state of (1), (3) of FIGS. 6A to 6C represents astate in which the display 120 is rotated by 45 degrees in the clockwisedirection from the state of (1), and (4) of FIGS. 6A to 6C represents astate in which the display 120 is rotated by 90 degrees in the clockwisedirection from the state of (1).

Referring to (1) of FIGS. 6A to 6C, the processor 140 may control thefirst speaker 130-1 to output a first audio signal corresponding to thefirst audio channel through the first speaker 130-1, and may control thesecond speaker 130-2 to output a second audio signal corresponding tothe second audio channel through the second speaker 130-2.

The processor 140 may control the motor 110 to rotate the display 120according to a user command for rotating the display 120. In this case,when the display 120 is rotated by 90 degrees in the clockwisedirection, the display 120 may be sequentially rotated from (1) to (2),(3), and (4) of FIGS. 6A to 6C over a duration of time.

According to an embodiment, the processor 140 may identify a rotationangle of the display 120 while the display 120 is rotated according tothe user command for rotating the display 120. For example, when theuser command for rotating the display 120 is input, the processor 140may periodically transmit a pulse signal having a specific width to themotor 110 to rotate the display 120 through driving of the motor 110. Inthis case, the processor 140 may identify the rotation angle (orrotation speed, rotation direction, etc.) of the display 120 based on aperiod at which the pulse signal is transmitted and the width of thepulse signal. In addition, the processor 140 may also identify a currentposition of each of the plurality of speakers 130 changed according tothe rotation of the display 120 based on an initial position value(default value) and the rotation angle corresponding to each of theplurality of speakers 130.

When the display 120 is identified as being rotated by a predeterminedcritical angle smaller than 90°, the processor 140 may output the secondaudio signal through the first speaker 130-1 of the plurality ofspeakers 130. At this time, when the display 120 is rotated by 90°, thefirst speaker 130-1 may be positioned in the same direction the secondspeaker 130-2 was positioned relative to the rotating shaft 10 beforethe display 120 is rotated.

That is, prior to the 90 degrees rotation the second speaker 130-2 mayhave been in the position of the first speaker 130-1 after the rotation.For example, the direction in which the first speaker 130-1 ispositioned relative to the rotating shaft 10 after the display 120 isrotated by 90 degrees may coincide with the direction in which thesecond speaker 130-2 was positioned relative to the rotating shaft 10before the display 120 was rotated.

The critical angle may refer to an angle in which the display 120 ischanged resulting in the first audio signal output from the firstspeaker 130-1 is output from the second speaker 130-2. The criticalangle may be a predetermined angle greater than 0 degrees and smallerthan 90 degrees. For example, in some non-limiting embodiments thecritical angle may be set to 45 degrees. In other non-limitingembodiments, the critical angle may differ.

When the display 120 is rotated to the state of (2), which is a rotationangle smaller than the example critical angle (e.g., 45 degrees), from(1) of FIGS. 6A and 6C, the processor 140 may identify that the rotationangle of the display 120 is 30 degrees. The processor 140 may identifythat the display 120 is rotated at a rotation angle (30 degrees) smallerthan the critical angle (45 degrees) by comparing the critical angle (45degrees) and the rotation angle (30 degrees) of the display 120. In thiscase, the processor 140 may maintain the audio signals of the audiochannels output from the first to fourth speakers 130-1 to 130-4, in thesame as the state of (1) before the display 120 is rotated.

In addition, assuming that the display 120 is rotated to the state of(3), which is the same rotation angle as the critical angle (e.g., 45degrees), from (1) of FIGS. 6A and 6C, the processor 140 may identifythat the rotation angle of the display 120 is 45 degrees, and mayidentify that the display 120 is rotated at the same rotation angle (45degrees) as the critical angle (45 degrees) by comparing the criticalangle (45 degrees) and the rotation angle (45 degrees) of the display120. In this case, the processor 140 may identify the audio channelcorresponding to the position of the first speaker 130-1, which waschanged as the display 120 rotated, as the R audio channel, and maycontrol the first speaker 130-1 to output the audio signal of the Raudio channel. Here, the R audio channel output from the first speaker130-1 may be an audio channel output from the second speaker 130-2before the display 120 is rotated. Similarly, the processor 140 maycontrol the second speaker 130-2 to output the audio signal of the Baudio channel, control the third speaker 130-3 to output the audiosignal of the L audio channel, and control the fourth speaker 130-4 tooutput the audio signal of the C audio channel.

In addition, assuming that the display 120 is rotated to the state of(4), which is a rotation angle greater than the critical angle (e.g., 45degrees), from (1) of FIGS. 6A and 6B, the processor 140 may identifythat the rotation angle of the display 120 is 90 degrees, and mayidentify that the display 120 is rotated at the rotation angle (90degrees) greater than the critical angle (45 degrees) by comparing thecritical angle (45 degrees) and the rotation angle (90 degrees) of thedisplay 120. In this case, the processor 140 may maintain the audiosignals of the audio channels output from the first to fourth speakers130-1 to 130-4, in the same as the state of (3) in which the display 120is rotated at the critical angle.

Referring to FIG. 6C, if it is identified that the display 120 has beenrotated by a predetermined critical angle, the processor 140 may controlthe display 120 to rotate by 90° and rotate an image displayed on thedisplay 120 in a direction opposite to the direction in which thedisplay 120 is rotated.

The critical angle may refer to an angle in which the display 120 isrotated the results in the image displayed on the display 120 beingrotated. In addition, the critical angle may be the same angle as theexample critical angle described above in FIGS. 6A and 6B.

That is, if it is identified that the display 120 has been rotated tothe state of (3), which is the same rotation angle as the examplecritical angle, from (1) of FIGS. 6A and 6B, the processor 140 maycontrol the display 120 to rotate by 90° and rotate the image displayedon the display 120 in the direction opposite to the direction in whichthe display 120 is rotated.

Accordingly, the display device 100 according to an embodiment may matchor sync the directionality of the sound and image. That is, both theaudio signals of the audio channels output from the plurality ofspeakers 130 and the image are rotated together, when the rotation angleof the display 120 reaches the critical angle as the display 120 isrotated, and may thus provide a natural viewing experience to the userwhile the display 120 rotates.

In addition, the display device 100 according to an embodiment mayidentify the rotation (e.g., rotation angle, rotation speed, rotationdirection, etc.) of the display 120 based on a signal for controllingthe motor 110, and may thus accurately identify the rotation of thedisplay 120 without a separate sensor. However, the display device 100is not limited thereto, and may also include a separate sensor capableof detecting rotation.

FIG. 7A is a diagram showing changes in positions of the speakers as thedisplay is rotated, according to an embodiment. FIG. 7B is a tableshowing audio signals output from the speakers as the display is rotatesaccording to an embodiment. FIG. 7C is a diagram showing an imagedisplayed on the display as the display is rotated according to anembodiment.

(1) of FIGS. 7A to 7C represents a state in which the display 120 isdisposed in the portrait direction, (2) of FIGS. 7A to 7C represents astate in which the display 120 is rotated by 30 degrees in the clockwisedirection from the state of (1), (3) of FIGS. 7A to 7C represents astate in which the display 120 is rotated by 45 degrees in the clockwisedirection from the state of (1), and (4) of FIGS. 7A to 7C represents astate in which the display 120 is rotated by 90 degrees in the clockwisedirection from the state of (1).

Referring to FIGS. 7A and 7B, the processor 140 may control the firstspeaker 130-1 to output a first audio signal corresponding to the firstaudio channel, and may control the second speaker 130-2 to output asecond audio signal corresponding to the second audio channel.

In addition, the processor 140 may control the motor 110 to rotate thedisplay 120 according to a user command for rotating the display 120. Inthis case, when the display 120 is rotated by 90 degrees in theclockwise direction, the display 120 may be sequentially rotated from(1) to (2), (3), and (4) of FIGS. 7A to 7C over a duration of time.

In the embodiment of FIGS. 7A-7C, the processor 140 may identify arotation angle of the display 120 while the display 120 is rotatedaccording to the user command for rotating the display 120. In thiscase, the processor 140 may identify the rotation angle (or rotationspeed, rotation direction, etc.) of the display 120 based on a period atwhich a pulse signal is transmitted and a width of the pulse signal, butis not limited thereto, and may identify the rotation angle of thedisplay 120 in various ways.

In addition, the processor 140 may identify a ratio in which the firstand second audio signals are mixed based on the identified rotationangle.

In some non-limiting embodiments, the processor 140 may identify a ratioof the first audio signal corresponding to the first speaker 130-1through a mathematical expression such as “(90 degrees-rotationangle)/90 degrees*100%”, and may identify a ratio of the second audiosignal corresponding to the first speaker 130-1 through a mathematicalexpression such as “(rotation angle)/90 degrees*100%”. Here, the firstaudio signal corresponding to the first speaker 130-1 may be an audiosignal output from the first speaker 130-1 in the state of (1) beforethe display 120 is rotated. In addition, the second audio signalcorresponding to the first speaker 130-1 may be output from the firstspeaker 130-1 in the state shown in (4) in which the display 120 hasbeen rotated by 90 degrees.

For example, if the rotation angle of the display 120 is 20 degrees, theprocessor 140 may identify that the ratio of the first audio signalcorresponding to the first speaker 130-1 is “(90 degrees-20 degrees)/90degrees*100%=about 78%”, and the ratio of the second audio signalcorresponding to the first speaker 130-1 is “(20 degrees)/90degrees*100%=about 22%”.

Accordingly, the processor 140 may identify a ratio in which theplurality of audio signals corresponding to the first to fourth speakers130-1 to 130-4 are mixed according to the rotation angles of the display120 as shown in (1) to (4) of FIGS. 7A and 7B.

In addition, the processor 140 may control the first speaker 130-1 tooutput the audio signal mixed based on the identified ratio through thefirst speaker 130-1 while the display 120 is rotated. When the display120 is rotated by 90°, the first speaker 130-1 may be a speakerpositioned in the same direction as a direction in which the secondspeaker 130-2 is positioned relative to the rotating shaft 10 before thedisplay 120 was rotated.

In some non-limiting embodiments, the processor 140 may mix the audiosignals according to the identified ratio. Here, the mixing may indicatesynthesizing (or superimposing) the audio signals. For example, theprocessor 140 may generate the mixed audio signal by synthesizing (orsuperimposing, adding) a “waveform of the first audio signal multipliedby the ratio of the first audio signal” and a “waveform of the secondaudio signal multiplied by the ratio of the second audio signal”.

As such, when the display 120 is gradually rotated, the display device100 may gradually adjust the ratio of the audio signals (audio channels)according to the rotation angle to output the audio signals from theplurality of speakers 130, thereby preventing the immersive feeling ofthe user listening to the sound from being deteriorated. In addition,even when the display 120 gradually rotates, the display device 100 mayprovide the sound to the user while maintaining a three-dimensional asound field effect and a sense of space.

In reference to FIG. 7C, the processor 140 may control the display 120to rotate and control an image displayed on the display 120 to rotate ina direction opposite to the direction in which the display 120 isrotated while the display 120 is rotated based on the rotation angle ofthe display 120.

That is, the processor 140 may control the display 120 to rotate andcontrol the displayed image to rotate in the direction opposite to therotation direction of the display 120 by the rotation angle at which thedisplay 120 is rotated.

Accordingly, in the eyes of the user, it looks as if an orientation ofthe image is maintained constant regardless of the rotation of thedisplay 120. As such, the display device 100 according to the disclosuremay prevent a user's immersive feeling for an image viewing from beingdeteriorated according to the rotation of the display 120.

In some non-limiting embodiments, the display device 100 may match orsync the directionality of the image and sound by gradually rotating theimage displayed on the display 120 according to the rotation angle ofthe display 120 and gradually adjusting the ratio of the audio signalsoutput from the plurality of speakers 130 at the same time, and may thusprovide a natural viewing experience to the user even while the display120 rotates.

FIG. 8A is a diagram showing changes in the positions of the speakers asthe display is rotated according to an embodiment. FIG. 8B is a tableshowing audio signals output from the speakers as the display is rotatedaccording to an embodiment.

(1) of FIGS. 8A and 8B represents a state in which the display 120 isdisposed in the portrait direction, (2) of FIGS. 8A and 8B represents astate in which the display 120 is rotated by 30 degrees in the clockwisedirection from the state of (1), and (3) of FIGS. 8A and 8B represents astate in which the display 120 is rotated by 90 degrees in the clockwisedirection from the state of (1).

The processor 140 may control the plurality of speakers 130 to output anaudio signal in which the plurality of audio signals are synthesizedthrough the plurality of speakers 130 while the display 120 is rotated.

The audio signal in which the plurality of audio signals are synthesizedmay be an audio signal corresponding to a mono channel synthesized bysuperimposing waveforms of the plurality of audio signals included inthe plurality of audio channels.

That is, as illustrated in (2) of FIGS. 8A and 8B (when the rotation ofthe display 120 proceeds from (1) to (3) in FIGS. 8A and 8B), theprocessor 140 may control the plurality of speakers 130 to output theaudio signal corresponding to the mono channel through the plurality ofspeakers 130 while the display 120 is rotated.

FIG. 9 is a diagram showing a user interface (UI) displayed on thedisplay according to an embodiment.

(1) of FIG. 9 shows a state in which the display 120 is disposed in theportrait direction, (2) of FIG. 9 shows a state in which the rotation inthe clockwise direction proceeds from the state of (1), and (3) of FIG.9 shows a state in which the rotation in the clockwise direction fromthe state of (1) is completed.

Referring to (2) of FIG. 9, the processor 140 may control the display120 to display a first user interface (UI) 910 while the display 120 isrotated. The first UT 910 may inform the user that the display 120 isbeing rotated or that the audio signals output from the plurality ofspeakers 130 are adjusted according to the rotation of the display 120.The first UI 910 may be implemented in various forms such as a message,an image, and a highlight effect. For example, the first UT 910 mayinclude a message such as “the speaker output is reset according to therotation”. Alternatively, the first UT 910 may include information aboutthe audio signals output from the plurality of speakers 130. However,this is only an example, and the first UI 910 may be implemented invarious forms.

Referring to (3) of FIG. 9, when the rotation of the display 120 iscompleted, the processor 140 may control the display 120 to display asecond user interface (UI) 920. In addition, when a predetermined time(e.g., n seconds, n is a natural number, etc.) has elapsed from a timepoint at which the rotation of the display 120 is completed, or when auser command is input, the processor 140 may control the display 120 toremove (not to display) the second UI 920 displayed on the display 120.Here, the second UI 920 is to inform the user that the rotation of thedisplay 120 is completed or that the audio signals output from theplurality of speakers 130 are adjusted according to the rotation of thedisplay 120, and the second UI 920 may be implemented in various formssuch as a message, an image, and a highlight effect. As an example, thesecond UI 920 may include a message such as “the speaker output is resetaccording to the rotation”. Alternatively, the second UI 920 may includeinformation about the audio signals output from the plurality ofspeakers 130. However, this is only an example, and the second UI 920may be implemented in various forms.

As such, the display device 100 more intuitively provide information (orfeedback) according to the rotation of the display 100 to the user usinga visual element such as a message or a graphic.

The plurality of speakers 130 according to an embodiment of thedisclosure may be implemented in the form of various numbers, sizes, andarrangements as shown in the non-limiting embodiments provided in FIGS.10 to 12B.

FIG. 10 is a diagram showing an arrangement of the speakers according toan embodiment.

Referring to FIG. 10, when the plurality of speakers 130 includes fourspeakers, each of the first speaker 130-1 to the fourth speaker 130-4may be respectively provided in one of an upper left corner region ofthe display 120, an upper right corner region of the display 120, alower left corner region of the display 120, and a lower right cornerregion of the display 120. Even when the positions in which theplurality of speakers 130 are disposed differently than described above,the description of the embodiment described above may be applied in thesame way.

Specifically, in a state in which the display 120 is disposed as shownin (1) of FIG. 10, the audio signal of the first audio channelrepresenting an upper left direction may be output from the firstspeaker 130-1 positioned in the upper left direction, and the audiosignal of the second audio channel representing an upper right directionmay be output from the second speaker 130-2 positioned in the upperright direction. In this way, the first to fourth audio channels areoutput from each of the first to fourth speakers 130-1 to 130-4.

When the display 120 is rotated by 90 degrees in the clockwise directionas shown in (2) of FIG. 10, the processor 140 may control the firstspeaker 130-1 to output the second audio channel representing the upperright direction corresponding to the upper right direction in which thefirst speaker 130-1 is positioned according to the rotation of thedisplay 120. In this way, the audio signals of the audio channels outputfrom the plurality of speakers 130 may be changed according to therotation of the display 120.

FIG. 11 is a diagram showing an arrangement of the speakers according toan embodiment.

Referring to FIG. 11, when the plurality of speakers 130 are implementedas two speakers 130-1 and 130-2, each of the first speaker 130-1 and thesecond speaker 130-2 may be provided in a left region of the display 120and a right region of the display 120, as shown in (1) of FIG. 11. Here,the plurality of audio channels may provide stereo audio, such as an Laudio channel for providing a sound effect in a left space and an Raudio channel for providing a sound effect in a right space.

As shown in (1) of FIG. 11, when the first speaker 130-1 and the secondspeaker 130-2 are identified as being positioned on the left and rightsides of the display 120, the processor 140 may control the firstspeaker 130-1 and the second speaker 130-2 to output the L audio channelthrough the first speaker 130-1 positioned in the left region of thedisplay 120 and output the R audio channel through the second speaker130-2 positioned in the right region of the display 120.

In addition, as illustrated in (2) of FIG. 11, when the display 120 isrotated according to the user command and the first speaker 130-1 andthe second speaker 130-2 are positioned in the upper and lowerdirections based on the display 120, the processor 140 may generate anaudio signal corresponding to a mono channel by synthesizing theplurality of audio signals included in the L audio channel and the Raudio channel. In addition, the processor 140 may control the firstspeaker 130-1 and the second speaker 130-2 to output the audio signalcorresponding to the mono channel.

When the audio channels providing the sound effects in the left andright spaces through the first speaker 130-1 and the second speaker130-2 positioned in the upper and lower directions based on the rotatingshaft 10 of the display 120 are output, the sound effects becomeunnatural. By converting and outputting the audio signal of stereo tothe audio signal of the mono channel, a more natural sound effect may beprovided to the user.

When the display 120 is rotated according to the user command and ischanged to the state as shown in (1) of FIG. 11, the processor 140 maycontrol the first speaker 130-1 positioned in the left region of thedisplay 120 to output the L audio channel and the second speaker 130-2positioned in the right region of the display 120 output the R audiochannel through. Accordingly, the display device 100 may provide stereoaudio.

As such, the display device 100 may provide an optimal sound effect byoutputting the audio signal corresponding to one of the mono channel anda multi-channel (stereo, surround, etc.) according to an arrangementstructure of the plurality of speakers 130.

FIG. 12A is a diagram showing an arrangement of the speakers accordingto an embodiment. FIG. 12B is a table showing audio signals output fromspeakers as the display is rotated according to an embodiment of thedisclosure.

(1) of FIGS. 12A and 12B represents a state in which the display 120 isdisposed in the portrait direction, (2) of FIGS. 12A and 12B representsa state in which the display 120 is rotated by 30 degrees in theclockwise direction from the state of (1), and (3) of FIGS. 12A and 12Brepresents a state in which the display 120 is rotated by 90 degrees inthe clockwise direction from the state of (1).

Referring to FIGS. 12A and 12B, the plurality of speakers 130 mayinclude a plurality of speakers provided in each of a plurality ofregions. Here, the plurality of regions may be side regions of thedisplay 120 (or side regions of the rear surface of the display 120).

In this case, the processor 140 may output a first audio signalcorresponding to the first audio channel through a plurality of firstspeakers 130-1A and 130-1B provided in a first region of the pluralityof regions, and may output a second audio signal corresponding to thesecond audio channel among the plurality of audio channels through aplurality of second speakers 130-2A and 130-2B provided in a secondregion of the plurality of regions.

For example, in the state of (1) of FIGS. 12A and 12B, the first regionmay be an upper region of the display 120, and the plurality of firstspeakers 130-1A and 130-1B may be positioned in the first region andoutput the C audio channel. The second region may be a right region ofthe display 120, and the plurality of second speakers 130-2A and 130-2Bmay be positioned in the second region and output the R audio channel.The third region may be a lower region of the display 120, and theplurality of third speakers 130-3A and 130-3B may be positioned in thethird region and output the B audio channel. The fourth region may be aleft region of the display 120, and the plurality of fourth speakers130-4A and 130-4B may be positioned in the fourth region and output theL audio channel.

When the display 120 is rotated by 90°, the processor 140 may output thesecond audio signal through the plurality of first speakers 130-1A and130-1B. At this time, when the display 120 has been rotated by 90°, thefirst region may be a region positioned in the same direction as adirection in which the second region was positioned relative to therotating shaft 10 before the display 120 was rotated. That is, thesecond region may be a region adjacent to the first region in therotation direction.

For example, when the display 120 is rotated by 90° as shown in (3)relative to the state of (1) of FIGS. 12A and 12B, the processor 140 mayoutput the audio signal of the R audio channel through the plurality offirst speakers 130-1A and 130-1B. In the same way, the processor 140 mayoutput the audio signal of the B audio channel through the plurality ofsecond speakers 130-2A and 130-2B, output the audio signal of the Laudio channel through the plurality of third speakers 130-3A and 130-3B,and output the audio signal of the C audio channel through the pluralityof fourth speakers 130-4A and 130-4B.

Here, while the display 120 is rotated according to the user command,the processor 140 may output the second audio signal through the speaker130-1B, which is adjacent to the second region, and output the firstaudio signal through the remaining speaker 130-1A.

For example, while the display 120 is rotated as shown in (2) relativeto the state of (1) of FIGS. 12A and 12B, the processor 140 may outputthe R audio signal through the speaker 130-1B which is adjacent to thesecond region in the rotation direction and output the C audio signalthrough the remaining speaker 130-1A. In the same way, the processor 140may output the B audio signal through the speaker 130-2B which isadjacent to the third region in the rotation direction, and output the Raudio signal through the remaining speaker 130-2A; output the L audiosignal through the speaker 130-3B which is adjacent to the fourth regionin the rotation direction, and output the B audio signal through theremaining speaker 130-3A; and output the C audio signal through thespeaker 130-4B which is adjacent to the first region in the rotationdirection, and output the L audio signal through the remaining speaker130-4A.

As such, even if there are the plurality of speakers in one region, thedisplay device 100 may implement a smoother sound transition because thespeaker existing in the rotation direction outputs the audio signal ofthe audio channel corresponding to the adjacent region in the rotationdirection while the display 120 rotates.

FIG. 13 is a block diagram showing additional components of anelectronic device according to an embodiment.

Referring to FIG. 13, the display device 100 may further include atleast one of an input device 150, a memory 160, a communicationinterface 170, a sensor 180, or a camera 190, in addition to the motor110, the display 120, the plurality of speakers 130, and the processor140.

The input device 150 may receive various user commands and transmit thereceived user commands to the processor 140. That is, the processor 140may recognize a user command input from the user through the inputdevice 150. Here, the user command may be implemented in various ways,such as a user's touch input (touch panel), a key (keyboard) or button(physical button or mouse) input, and a user voice (microphone).

Specifically, the input device 150 may include, for example, at leastone of a touch panel (not illustrated), a pen sensor (not illustrated),a key (not illustrated), or a microphone (not illustrated). The touchpanel may use at least one of, for example, a capacitive type, aresistive type, an infrared type, or an ultrasonic type, and to thisend, the touch panel may also include a control circuit. The touch panelmay further include a tactile layer to provide a tactile reaction to theuser. The pen sensor may be, for example, a portion of the touch panelor may include a separate sheet for recognition. The key may include,for example, a physical button, an optical key, or a keypad. Themicrophone may directly receive a user's voice, and may acquire an audiosignal by converting the user's voice, which is an analog signal, into adigital by a digital converter (not illustrated).

The above listed input devices are provided as examples of inputdevices, and the processor 140 may also receive the user command bycommunicating with an external device (e.g., a Bluetooth keyboard, amouse, a pen, a remote controller, a smartphone, etc.) through thecommunication interface 170.

The memory 160 is a component in which various information (or data) maybe stored. For example, the memory 160 may store the information in anelectric form or a magnetic form.

Specifically, at least one instruction, module, or data necessary forthe operation of the display device 100 or the processor 140 may bestored in the memory 160. Here, the instruction may be written inmachine language that may be understood by the display device 100 or theprocessor 140, as a unit directing the operation of the display device100 or the processor 140. A module may be a set of sub-instructionsconfiguring a software program (or operating system, application,dynamic library, runtime library, etc.), but this is only an example,and the module may be the program itself. The data may be materials inunits of bits or bytes that may be processed by the display device 100or the processor 140 to represent information such as letters, numbers,sounds, and images.

The communication interface 170 may transmit and receive various typesof data by performing communication with various types of externaldevices according to various types of communication methods. Thecommunication interface 170 is a circuit that performs various types ofwireless communication, and may include at least one of an Ethernetmodule or a USB module that performs wired communication with aBluetooth chip (Bluetooth type), a Wi-Fi chip (Wi-Fi type), a wirelesscommunication chip (cellular type such as 3G, 4G, 5G, etc.), an NFC chip(NFC type), an IR chip (infrared type), and an ultrasonic communicationchip (ultrasound type). In this case, the Ethernet module and the USBmodule that perform wired communication may communicate with theexternal devices through an input/output port.

The sensor 180 may refer to a device that detects the amount or changeof various physical signals (e.g., temperature, light, sound, chemicals,electricity, magnetism, pressure, etc.). Here, the detected signal maybe converted into data in a format that the processor 140 may interpret.

The sensor 180 may be implemented as various sensors such as a proximitysensor, an illuminance sensor, a temperature sensor, a humidity sensor,a motion sensor, a ToF (time of flight) sensor, and a GPS (globalpositioning system) sensor.

Here, the proximity sensor may detect the presence of a surroundingobject, thereby acquiring data on whether or not the surrounding objectis present or whether or not the surrounding object is in proximity. Theilluminance sensor may detect the amount of light (or brightness) for asurrounding environment of the display device 100, thereby acquiringdata on illuminance. The temperature sensor may detect a temperature ofa target object or a temperature (e.g., indoor temperature, etc.) of thesurrounding environment of the display device 100 according to heatradiation (or photon). In some non-limiting embodiments, the temperaturesensor may be implemented as an infrared camera or the like. Thehumidity sensor may detect the amount of water vapor in air throughvarious methods such as color change, ion amount change, electromotiveforce, and current change due to a chemical reaction in the air, therebyacquiring data on humidity. The motion sensor may detect a movingdistance, a moving direction, and a tilt of the display device 100. Insome embodiments, the motion sensor may be implemented by combining anacceleration sensor, a gyro sensor, a geomagnetic sensor, and the like.The time of flight (TOF) sensor may detect a return time of flight afteremitting various electromagnetic waves (e.g., ultrasonic waves, infraredrays, lasers, etc.) having a specific speed, thereby acquiring data on adistance (or position) from the target. The global positioning system(GPS) sensor may receive radio wave signals from a plurality ofsatellites, calculate a distance from each satellite by using atransmission time of the received signal, and acquire data on a currentposition of the display device 100 by using triangulation on thecalculated distance.

However, the sensor 180 described above is only provided as an example,and is not limited thereto, and it may be implemented as various typesof sensors.

The camera 190 may classify light into pixel units, detect the intensityof light for red (R), green (G), and blue (B) colors for each pixel,convert the intensity of light into an electrical signal, therebyacquiring data representing an object's color, shape, and contrast. Atthis time, the type of data may be an image having R, G, and B colorvalues for each of a plurality of pixels.

FIG. 14 is a block diagram showing additional components of a speakeraccording to an embodiment.

The plurality of speakers 130 may include a first speaker 130-1, asecond speaker 130-2, . . . , an n-th speaker 130-n. Hereinafter, then-th speaker 130-n will be described as a representative of otherspeakers in order to omit overlapping content. That is, the descriptionof the n-th speaker 130-n may be applied to other speakers in the sameway.

Referring to FIG. 14, the n-th speaker 130-n according to an embodimentof the disclosure may include an input interface 131, an input mixer132, an analog to digital converter 133, an audio processor 134, and adigital to analog converter 135, an output mixer 136, and an outputinterface 137.

The input interface 131 may receive a plurality of audio signalscorresponding to a plurality of audio channels. For example, the inputinterface 131 may receive the audio signal from the input device 150such as a microphone or an external device connected by wired orwireless communication, or may receive the audio signal from othercomponents (e.g., the processor 140, the memory 160, etc.) of thedisplay device 100.

The input mixer 132 may synthesize the plurality of input audio signalsinto at least one audio signal. For example, the input mixer 132 mayalso synthesize a plurality of analog audio signals input through theinput interface 131 into at least one analog audio signal.

The analog to digital converter (ADC) 133 may convert an analog audiosignal into a digital audio signal. For example, the analog to digitalconverter 133 may convert the analog audio signal received through theinput interface 131 or the analog audio signal synthesized through theinput mixer 132 into the digital audio signal.

The audio processor 134 may perform various processing for the digitalaudio signal received through the analog to digital converter 133 or thedigital audio signal received from other components (e.g., the processor140, the memory 160, etc.) of the display device 100. As an example, theaudio processor 134 may change a sampling rate, apply at least onefilter, perform interpolation processing, amplify or attenuate all orpart of a frequency bandwidth, perform noise processing (e.g.,attenuation of noise or echo), change the audio channel (e.g., switchingbetween mono and stereo), perform mixing on the plurality of audiochannels, or extract specific signals from one or more digital audiosignals. In addition, one or more functions of the audio processor 134may be implemented in the form of an equalizer. However, this is only anexample, and the operation performed by the audio processor 134 may beperformed by the processor 140 according to the disclosure, or sharedand performed.

The digital to analog converter (DAC) 135 may convert the digital audiosignal into the analog audio signal. For example, the digital to analogconverter 135 may convert the digital audio signal processed by theaudio processor 134 or the digital audio signal received from othercomponents (e.g., the processor 140 or the memory 160) of the displaydevice 100 into the analog audio signal.

The output mixer 136 may synthesize a plurality of audio signals to beoutput into at least one audio signal. For example, the output mixer 136may synthesize the audio signal (e.g., the analog audio signal receivedthrough the input interface 131) different from the analog audio signalconverted by the digital to analog converter 135 into at least oneanalog audio signal.

The output interface 137 may output the analog audio signal converted bythe digital to analog converter 135 or the analog audio signalsynthesized by the output mixer 136 to the outside of the display device100. For example, the output interface 137 may be implemented as adynamic driver, a balanced armature driver, or the like.

FIG. 15 is a flowchart showing a control method of a display deviceaccording to an embodiment.

Referring to FIG. 15, a non-limiting embodiment of control method of adisplay device 100 may include an operation (S1510) of outputting aplurality of audio signals corresponding to a plurality of audiochannels through a plurality of speakers 130, an operation (S1520) ofcontrolling a motor 110 to rotate a display 120 based on an input of auser command for rotating the display 120, and an operation (S1530) ofcontrolling the plurality of speakers 130 to output the plurality ofaudio signals based on positions of the plurality of speakers 130changed according to the rotation of the display 120.

In operation S1510, a plurality of audio signals corresponding to aplurality of audio channels may be output through a plurality ofspeakers 130.

The plurality of speakers 130 may be provided in a plurality of regionsand positioned in a plurality of different directions in relation to arotating shaft 10 of the display 120.

To output the plurality of audio signals, the audio channelcorresponding to the position of each of the plurality of speakers 130may be identified, and the audio signal corresponding to the identifiedaudio channel may be output through each speaker.

When outputting the plurality of audio signals, a first audio signalcorresponding to a first audio channel among the plurality of audiochannels may be output through a first speaker 130-1 of the plurality ofspeakers 130, and a second audio signal corresponding to a second audiochannel among the plurality of audio channels may be output through asecond speaker 130-2 of the plurality of speakers 130. In operationS1520, when a user command for rotating the display 120 is input, themotor 110 may be controlled to rotate the display 120.

In operation S1530, after the rotation of the display 120, the pluralityof speakers 130 may be controlled to output the plurality of audiosignals based on the positions of the plurality of speakers 130 thathave been changed by rotating the display 120.

When position of each of the plurality of speakers 130 is changedaccording to the rotation of the display 120, the audio channelcorresponding to the new position of each speaker may be identified, andthe audio signal corresponding to the identified audio channel may beoutput through each speaker.

When the display 120 is rotated by 90°, the first speaker 130-1 may be aspeaker positioned in the same direction as a direction in which thesecond speaker 130-2 was position prior to the rotation. Accordingly,the first speaker 130-1 may be controlled to output the second audiosignal. According to an embodiment, controlling of the speakers 130 mayinclude identifying a ratio at which the first and second audio signalsare mixed based on a rotation angle at which the display 120 is rotated,and controlling the first speaker 130-1 to output the audio signal mixedbased on the identified ratio through the first speaker 130-1 while thedisplay 120 is rotated.

The control method may further include controlling the display 120 torotate and controlling an image displayed on the display 120 to rotatein a direction opposite to the direction in which the display 120 isrotated while the display 120 is rotated based on the rotation angle ofthe display 120.

According to an embodiment, the plurality of speakers 130 may becontrolled to output an audio signal in which the plurality of audiosignals are synthesized while the display 120 is rotated.

According to an embodiment, when it is identified that the display 120is rotated by a predetermined critical angle smaller than 90°, thesecond audio signal may be output through the first speaker 130-1 amongthe plurality of speakers 130, and when the display 120 is rotated by90°, the first speaker 130-1 may be positioned in the same direction asthe direction in which the second speaker 130-2 was positioned relativeto the rotating shaft 10 before the display 120 was rotated.

Here, the control method may further include controlling the display 120to rotate by 90° and control an image displayed on the display 120 torotate in a direction opposite to the direction in which the display 120is rotated, when it is identified that the display 120 is rotated by thepredetermined critical angle.

The plurality of speakers 130 may include a plurality of speakersprovided in each of a plurality of regions on the display 120.

In the outputting of the plurality of audio signals, a first audiosignal corresponding to the first audio channel may be output through aplurality of first speakers 130-1A and 130-1B provided in a first regionof the plurality of regions, and a second audio signal corresponding tothe second audio channel may be output through a plurality of secondspeakers 130-2A and 130-2B provided in a second region of the pluralityof regions.

In some non-limiting embodiments, when the display 120 is rotated by90°, the second audio signal may be output through the plurality offirst speakers 130-1A and 130-1B. At this time, when the display 120 isrotated by 90°, the first region may be a region positioned in the samedirection as a direction in which the second region was positionedrelative to the rotating shaft 10 before the display 120 was rotated.

While the display 120 is rotated according to the user command, thesecond audio signal may be output through the speaker 130-1B which isadjacent to a second region, and the first audio signal may be outputthrough the remaining speaker 130-1A.

According to diverse embodiments of the disclosure, a display device inwhich an audio signal output according to rotation of a display and acontrol method thereof are provided.

According to diverse embodiments of the disclosure, a user may beprovided with a more smooth and natural transition of image and audiowhile the display rotates.

The diverse embodiments of the disclosure may be implemented by softwareincluding instructions that are stored in machine-readable storage media(e.g., a computer). The machine may be an apparatus that invokes thestored instructions from the storage media and is operable according tothe invoked instructions, and may include the electronic apparatus(e.g., an electronic device) according to the embodiments of thedisclosure. When the instructions are executed by the processor 140, theprocessor 140 may perform functions corresponding to the instructions,either directly or using other components under the control of theprocessor 140. The instructions may include codes generated or executedby a compiler or an interpreter. The machine-readable storage media maybe provided in the form of non-transitory storage media. Here, the term‘non-transitory’ means that the storage medium does not include a signaland is tangible, but does not distinguish whether data is storedsemi-permanently or temporarily in the storage medium.

The method according to diverse embodiments may be provided in acomputer program product. The computer program product may be traded asa product between a seller and a purchaser. The computer program productmay be distributed in the form of a machine readable storage media(e.g., a compact disc read only memory (CD-ROM)), or online through anapplication store (e.g., PlayStore™). In the case of the onlinedistribution, at least a portion of the computer program product may beat least temporarily stored in a storage medium such as a memory of aserver of a manufacturer, a server of an application store, or a relayserver, or be temporarily generated.

Each of the components (e.g., modules or programs) according to thediverse embodiments may include a single entity or a plurality ofentities, and some sub-components of the sub-components described abovemay be omitted, or other sub-components may be further included in thediverse embodiments. Alternatively or additionally, some components(e.g., modules or programs) may be integrated into one entity to performthe same or similar functions performed by the respective componentsprior to the integration. The operations performed by the module, theprogram, or other component, in accordance with the diverse embodimentsmay be executed in a sequential, parallel, iterative, or heuristicmanner, or at least some operations may be executed in a different orderor omitted, or other operations may be added.

Although embodiments of the disclosure have been illustrated anddescribed hereinabove, the disclosure is not limited to theabovementioned specific embodiments, but may be variously modified bythose skilled in the art to which the disclosure pertains withoutdeparting from the gist of the disclosure as disclosed in theaccompanying claims. These modifications should also be understood tofall within the scope of the disclosure.

What is claimed is:
 1. A display device comprising: a motor; a display;a plurality of speakers comprising a first speaker and a second speaker;and at least one processor configured to: control the first speaker tooutput a first audio signal, based on a user command for rotating thedisplay being received, control the motor to rotate the display, controlthe first speaker to output the first audio signal with a first volumeand the second speaker to output the first audio signal with a secondvolume while the display is being rotated, and after the display isrotated, control the second speaker to output the first audio signal,wherein the at least one processor is configured to, while the displayis being rotated: identify a rotation angle of the display, identify aratio between the first volume of the first audio signal outputtedthrough the first speaker and the second volume of the first audiosignal outputted through the second speaker based on the identifiedrotation angle, and based on the identified ratio, control the firstspeaker to output the first audio signal with the first volume and thesecond speaker to output the first audio signal with the second volume,and wherein, while the display is being rotated, the first volume of thefirst audio signal outputted through the first speaker decrease based onthe identified ratio and the second volume of the first audio signaloutputted through the second speaker increase based on the identifiedratio.
 2. The display device as claimed in claim 1, wherein theplurality of speakers further comprises a third speaker and a fourthspeaker, and wherein the at least one processor is configured to:control the third speaker to output a second audio signal, while thedisplay is being rotated, identify a ratio between a third volume of thesecond audio signal outputted through the third speaker and a fourthsecond volume of the second audio signal outputted through the fourthspeaker based on the identified rotation angle and control the thirdspeaker to output the second audio signal with the third volume and thefourth speaker to output the second audio signal with the fourth volumebased on the identified ratio, and after the display is rotated, controlthe fourth speaker to output the second audio signal, wherein, while thedisplay is being rotated, the third volume of the second audio signaloutputted through the third speaker decrease based on the identifiedratio and the fourth volume of the second audio signal outputted throughthe fourth speaker increase based on the identified ratio.
 3. Thedisplay device as claimed in claim 2, wherein the first audio signal isL(left) audio signal or R(right) audio signal, and if the first audiosignal is the L audio signal, the second audio signal is the R audiosignal and if the first audio signal is the R audio signal, the secondaudio signal is the L audio signal.
 4. The display device as claimed inclaim 2 wherein, the display is configured to rotate 90 degrees in aclockwise direction or a counterclockwise direction, wherein a positionof the second speaker in the display after the display is rotatedcorresponds to a position of the first speaker in the display before thedisplay is rotated, and wherein a position of the fourth speaker in thedisplay after the display is rotated corresponds to a position of thethird speaker in the display before the display is rotated.
 5. Thedisplay device as claimed in claim 4, wherein if the first speaker is aspeaker which is positioned in a left side of the display, the thirdspeaker is a speaker which is positioned in a right side of the displayand the display rotates 90 degrees in the clockwise direction, thesecond speaker is a speaker which is positioned in a bottom side of thedisplay and the fourth speaker is a speaker which is positioned in aupper side of the display, if the first speaker is the speaker which ispositioned in the left side of the display, the third speaker is thespeaker which is positioned in the right side of the display and thedisplay rotates 90 degrees in the counterclockwise direction, the secondspeaker is the speaker which is positioned in the upper side of thedisplay and the fourth speaker is a speaker which is positioned in thebottom side of the display, if the first speaker is the speaker which ispositioned in the right side of the display, the third speaker is thespeaker which is positioned in the left side of the display and thedisplay rotates 90 degrees in the clockwise direction, the secondspeaker is the speaker which is positioned in the upper side of thedisplay, and the fourth speaker is the speaker which is positioned inthe bottom side of the display, and if the first speaker is the speakerwhich is positioned in the right side of the display, the third speakeris the speaker which is positioned in the left side of the display andthe display rotates 90 degrees in the counterclockwise direction, thesecond speaker is the speaker which is positioned in the bottom side ofthe display and the fourth speaker is the speaker which is positioned inthe upper side of the display.
 6. The display device as claimed in claim1, wherein if the identified rotation angle is less than 45 degrees, thefirst volume of the first audio signal outputted through the firstspeaker is greater than the second volume of the first audio signaloutputted through the second speaker, and if the identified rotationangle is greater than 45 degrees, the first volume of the first audiosignal outputted through the first speaker is less than the secondvolume of the first audio signal outputted through the second speaker.7. The display device as claimed in claim 1, wherein if the identifiedrotation angle is 30 degrees, the first volume of the first audio signaloutputted through the first speaker is ⅔ of a volume of the first audiosignal outputted through the first speaker before the display is rotatedand the second volume of the first audio signal outputted through thesecond speaker is ⅓ of the volume of the first audio signal outputtedthrough the first speaker before the display is rotated.
 8. The displaydevice as claimed in claim 2, wherein if the identified rotation angleis less than 45 degrees, the third volume of the second audio signaloutputted through the third speaker is greater than the fourth volume ofthe second audio signal outputted through the fourth speaker, and if theidentified rotation angle is greater than 45 degrees, the third volumeof the second audio signal outputted through the second speaker is lessthan the fourth volume of the second audio signal outputted through thefourth speaker.
 9. The display device as claimed in claim 1, wherein theat least one processor is configured to based on the identified rotationangle, rotate an image displayed on the display in a first directionwhile the display is being rotated, and wherein the first direction isopposite to a second direction in which the display is rotated.
 10. Acontrol method of a display device, the control method comprising:outputting, through a first speaker of the display device, a first audiosignal; based on a user command for rotating the display being received,rotating a display of the display device; outputting, through the firstspeaker and a second speaker of the display device, the first audiosignal with a first volume and the first audio signal with a secondvolume respectively while the display is being rotated; and after thedisplay is rotated, outputting, through the second speaker, the firstaudio signal, wherein the outputting, through the first speaker and thesecond speaker, the first audio signal with the first volume and thefirst audio signal with the second volume respectively comprises:identifying a rotation angle of the display; identifying a ratio betweenthe first volume of the first audio signal outputted through the firstspeaker and the second volume of the first audio signal outputtedthrough the second speaker based on the identified rotation angle; andoutputting, through the first speaker and the second speaker, the firstaudio signal with the first volume and the first audio signal with thesecond volume respectively based on the identified ratio, and wherein,while the display is being rotated, the first volume of the first audiosignal outputted through the first speaker decrease based on theidentified ratio and the second volume of the first audio signaloutputted through the second speaker increase based on the identifiedratio.
 11. The control method as claimed in claim 10, furthercomprising: outputting, through a third speaker of the display device, asecond audio signal; while the display is being rotated, identifying aratio between a third volume of the second audio signal outputtedthrough a third speaker of the display device and a fourth volume of thesecond audio signal outputted through a fourth speaker of the displaydevice based on the identified rotation angle and outputting, throughthe third speaker and the fourth speaker, the second audio signal withthe third volume and the second audio signal with the fourth volumerespectively based on the identified ratio; and after the display isrotated, outputting, through the fourth speaker, the second audiosignal, wherein, while the display is being rotated, the third volume ofthe second audio signal outputted through the third speaker decreasebased on the identified ratio and the fourth volume of the second audiosignal outputted through the fourth speaker increase based on theidentified ratio.
 12. The control method as claimed in claim 11, whereinthe first audio signal is L(left) audio signal or R(right) audio signal,and if the first audio signal is the L audio signal, the second audiosignal is the R audio signal and if the first audio signal is the Raudio signal, the second audio signal is the L audio signal.
 13. Thecontrol method as claimed in claim 11 wherein, the display is configuredto rotate 90 degrees in a clockwise direction or a counterclockwisedirection, wherein a position of the second speaker in the display afterthe display is rotated corresponds to a position of the first speaker inthe display before the display is rotated, and wherein a position of thefourth speaker in the display after the display is rotated correspondsto a position of the third speaker in the display before the display isrotated.
 14. The control method as claimed in claim 13, wherein if thefirst speaker is a speaker which is positioned in a left side of thedisplay, the third speaker is a speaker which is positioned in a rightside of the display and the display rotates 90 degrees in the clockwisedirection, the second speaker is a speaker which is positioned in abottom side of the display and the fourth speaker is a speaker which ispositioned in a upper side of the display, if the first speaker is thespeaker which is positioned in the left side of the display, the thirdspeaker is the speaker which is positioned in the right side of thedisplay and the display rotates 90 degrees in the counterclockwisedirection, the second speaker is the speaker which is positioned in theupper side of the display and the fourth speaker is a speaker which ispositioned in the bottom side of the display, if the first speaker isthe speaker which is positioned in the right side of the display, thethird speaker is the speaker which is positioned in the left side of thedisplay and the display rotates 90 degrees in the clockwise direction,the second speaker is the speaker which is positioned in the upper sideof the display, and the fourth speaker is the speaker which ispositioned in the bottom side of the display, and if the first speakeris the speaker which is positioned in the right side of the display, thethird speaker is the speaker which is positioned in the left side of thedisplay and the display rotates 90 degrees in the counterclockwisedirection, the second speaker is the speaker which is positioned in thebottom side of the display and the fourth speaker is the speaker whichis positioned in the upper side of the display.
 15. The control methodas claimed in claim 10, wherein if the identified rotation angle is lessthan 45 degrees, the first volume of the first audio signal outputtedthrough the first speaker is greater than the second volume of the firstaudio signal outputted through the second speaker, and if the identifiedrotation angle is greater than 45 degrees, the first volume of the firstaudio signal outputted through the first speaker is less than the secondvolume of the first audio signal outputted through the second speaker.16. The control method as claimed in claim 10, wherein if the identifiedrotation angle is 30 degrees, the first volume of the first audio signaloutputted through the first speaker is ⅔ of a volume of the first audiosignal outputted through the first speaker before the display is rotatedand the second volume of the first audio signal outputted through thesecond speaker is ⅓ of the volume of the first audio signal outputtedthrough the first speaker before the display is rotated.
 17. The controlmethod as claimed in claim 11, wherein if the identified rotation angleis less than 45 degrees, the third volume of the second audio signaloutputted through the third speaker is greater than the fourth volume ofthe second audio signal outputted through the fourth speaker, and if theidentified rotation angle is greater than 45 degrees, the third volumeof the second audio signal outputted through the second speaker is lessthan the fourth volume of the second audio signal outputted through thefourth speaker.
 18. The control method as claimed in claim 10, furthercomprising: based on the identified rotation angle, rotating an imagedisplayed on the display in a first direction while the display is beingrotated, and wherein the first direction is opposite to a seconddirection in which the display is rotated.